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W91440N

Features: · DTMF/pulse switchable dialer· Two by 32 digit redial and save memory· Ten by 16 digit two-touch direct memory· Redial memory cascadable with normal dialing; dialing length is unlimited, but if lengthoversteps 32 digits the redial function is inhibited· Pulse-to-tone (*/T) keypad for lo...

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SeekIC No. : 004545279 Detail

W91440N: Features: · DTMF/pulse switchable dialer· Two by 32 digit redial and save memory· Ten by 16 digit two-touch direct memory· Redial memory cascadable with normal dialing; dialing length is unlimited, ...

W91440N Data Sheet

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Part Number:
W91440N
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/20

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Product Details

Description



Features:

· DTMF/pulse switchable dialer
· Two by 32 digit redial and save memory
· Ten by 16 digit two-touch direct memory
· Redial memory cascadable with normal dialing; dialing length is unlimited, but if length
oversteps 32 digits the redial function is inhibited
· Pulse-to-tone (*/T) keypad for long distance call operation
· Uses 5 × 5 keyboard
· Easy operation with redial, flash, pause and */T keypads
· Flash, pause, P®T (Pulse-to-tone) can be stored as a digit in memory
· Dialing rate (10, 20 ppS ) selected by bonding option
· On-hook debounce time: 150 msec.
· Minimum tone output duration: 93 msec.
· Minimum intertone pause: 93 msec.
· Flash break time (73, 100, 300, 600 msec.) selectable by keypad, and the pause time is 1 sec.
· On-chip power-on reset
· Uses 3.579545 MHz crystal or ceramic resonator
· Packaged in 18-pin plastic DIP
· The different dialers in the W91440N series are shown in the following table


Pinout

Connection Diagram


Specifications

PARAMETER
SYMBOL
RATING
UNIT
DC Supply Voltage
VDD-VSS
-0.3 to +7.0
V
Input/Output Voltage
VIL
VSS -0.3
V
VIH
VDD +0.3
V
VOL
VSS -0.3
V
VOH
VDD +0.3
V
Power Dissipation
PD
120
mW
Operation Temperature
TOPR
-20 to +70
°C
Storage Temperature
TSTG
-55 to +150
°C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.


Description

The W91440N series are Si-gate CMOS ICs that provide the necessary signals for either tone or pulse dialing. The W91440N series features save memory and a 10 by 16 digit automatic dialing memory.




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